Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
calculations phase » calculations charge, calculations based, calculations chapter
development under » development index, development united, development center
technologies 1 » technologies _, technologies 4, technologies 2
1 calculations » _ calculations, 2 calculations, 9 calculations
4 development » 2 development, 4 developing
under africa » hunger africa, andes africa, under american
1 mobile » _ mobile, a mobile, 2 mobile
phase 1 » phase _
costs 4 » costs _, costs a, costs 4.2

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologies 1 calculations phase 1 mobile communications costs 4 development under africa.*.